Drizzle-ORM+PSQL: sorry, too many clients already

X tRPC failed on school.getAll: sorry, too many clients already
I guess this is because the connections stay open? or because it opens a connection per request for some reason?

This is my TRPC inner context:
const createInnerTRPCContext = (opts: CreateContextOptions) => {
  return {
    db,
  };
};

(Default one provided by T3-Drizzle stack)

Why is that happening?
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